simple open ended pipe flow with moving piston

lmarf88 · November 21, 2013, 09:55

Hi,

I am very new to CFD and have only had one tutorial on the software ANSYS FLUENT 14.5 and workbench 14.5.

I am trying to create a simple 2D model representing a moving piston in an open ended pipe. The pipe has a constant diameter of 50mm. Eventually I want to model a moving piston in a rapid compression machine, but to get to grips with the software and modelling, I have decided to start with a simple open ended cylinder.

I have seen some video examples of this using dynamic meshing to represent a moving piston
http://www.youtube.com/watch?v=KadTHtkCxKA, I want to simulate a model similar to this, but the end of the cylinder to be open-ended.
I cannot find any tutorials for how to simulate this model, only tutorials of dynamic meshing with a valve rather than piston, and these tutorials are from a much older version of the program.

If anybody could help me or point me to a more relevant, updated tutorial that would be very helpful.

Thanks,
Lisa

Adi singh · November 22, 2013, 21:12

You Should Define moving mesh . and similar example is in Fluent tutorials. That would help you.

November 21, 2013, 09:55	simple open ended pipe flow with moving piston	#1
lmarf88 New Member Lisa Marfell Join Date: Nov 2013 Posts: 7 Rep Power: 12	Hi, I am very new to CFD and have only had one tutorial on the software ANSYS FLUENT 14.5 and workbench 14.5. I am trying to create a simple 2D model representing a moving piston in an open ended pipe. The pipe has a constant diameter of 50mm. Eventually I want to model a moving piston in a rapid compression machine, but to get to grips with the software and modelling, I have decided to start with a simple open ended cylinder. I have seen some video examples of this using dynamic meshing to represent a moving piston http://www.youtube.com/watch?v=KadTHtkCxKA, I want to simulate a model similar to this, but the end of the cylinder to be open-ended. I cannot find any tutorials for how to simulate this model, only tutorials of dynamic meshing with a valve rather than piston, and these tutorials are from a much older version of the program. If anybody could help me or point me to a more relevant, updated tutorial that would be very helpful. Thanks, Lisa

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November 22, 2013, 21:12		#2
Adi singh New Member aditya singh Join Date: Nov 2013 Location: Mumbai/Delhi Posts: 2 Rep Power: 0	You Should Define moving mesh . and similar example is in Fluent tutorials. That would help you.